Hi Guys,
I think i found unfortunaly a new BUg in MSFS 2020. When you go up with the Camera in the Cockpit to the Overheadpanel, You can see that the Airport Buildings unfortunaly gets invisible. Yo can only see the Jetways. But when you get with the Camera View from the Overhead panel a little bit down with the Viewpoint you can see the Buildings again. I have maked a Youtube Video about this Bug. Which you can see here: - YouTube Give the Jetways and the Background behinde the Jetways your atentnion to have a good view of the Bug.
Sorry for my bad english 
Best greetings your
Legendsy